Power to order vessels not to come alongside of, or to be

removed from docks, wharves etc., - Any Officer appointed by the Board in this behalf, may, in cases of emergency or for any reason which appears to him sufficient, by notice in writing, order the master or owner or agent of any sea-going vessel not to bring such vessel alongside of, or to remove such vessel from any dock, berth, wharf, quay, stage, jetty, pier or place of anchorage belonging to or under the control of the Board and if, such notice is not complied with, the Board may charge in respect of such vessel such sum as may be notified during which such vessel remains at such dock, berth, wharf, quay, stage, jetty, pier or place of anchorage: Provided that in the case of vessel ordered to be removed, such charges shall not commence to be made till after the expiry of twelve hours from the service of such notice as aforesaid on the master or owner or agent of the vessel.